City State Bank
Norwalk, IA — Non-member Bank
Active
Net Interest Margin Over Time
| Net Interest Margin | City State Bank | All Insured Commercial Banks in Iowa |
| 12-31-2016 | 3.192 | 3.587 |
| 09-30-2016 | 3.206 | 3.602 |
| 06-30-2016 | 3.207 | 3.598 |
| 03-31-2016 | 3.28 | 3.601 |
| 12-31-2015 | 3.314 | 3.591 |
| 09-30-2015 | 3.328 | 3.588 |
| 06-30-2015 | 3.307 | 3.563 |
| 03-31-2015 | 3.332 | 3.541 |
| 12-31-2014 | 3.464 | 3.569 |
| 09-30-2014 | 3.453 | 3.552 |
| 06-30-2014 | 3.426 | 3.525 |
| 03-31-2014 | 3.344 | 3.52 |
| 12-31-2013 | 3.254 | 3.538 |
| 09-30-2013 | 3.238 | 3.526 |
| 06-30-2013 | 3.229 | 3.501 |
| 03-31-2013 | 3.221 | 3.488 |
| 12-31-2012 | 3.468 | 3.696 |
| 09-30-2012 | 3.437 | 3.722 |
| 06-30-2012 | 3.421 | 3.729 |
| 03-31-2012 | 3.428 | 3.767 |
| 12-31-2011 | 3.598 | 3.861 |
| 09-30-2011 | 3.592 | 3.865 |
| 06-30-2011 | 3.512 | 3.833 |
| 03-31-2011 | 3.444 | 3.808 |
| 12-31-2010 | 3.771 | 3.947 |
| 09-30-2010 | 3.743 | 3.957 |
| 06-30-2010 | 3.727 | 3.936 |
| 03-31-2010 | 3.716 | 3.922 |
| 12-31-2009 | 3.98 | 3.845 |
| 09-30-2009 | 3.96 | 3.829 |
| 06-30-2009 | 3.858 | 3.787 |
| 03-31-2009 | 3.827 | 3.796 |
| 12-31-2008 | 3.722 | 3.764 |
| 09-30-2008 | 3.67 | 3.732 |
| 06-30-2008 | 3.579 | 3.664 |
| 03-31-2008 | 3.683 | 3.658 |
| 12-31-2007 | 3.629 | 3.674 |
| 09-30-2007 | 3.616 | 3.667 |
| 06-30-2007 | 3.606 | 3.654 |
| 03-31-2007 | 3.549 | 3.624 |
| 12-31-2006 | 3.817 | 3.746 |
| 09-30-2006 | 3.799 | 3.762 |
| 06-30-2006 | 3.787 | 3.771 |
| 03-31-2006 | 3.838 | 3.763 |
| 12-31-2005 | 4.013 | 3.863 |
| 09-30-2005 | 3.99 | 3.877 |
| 06-30-2005 | 3.831 | 3.881 |
| 03-31-2005 | 3.885 | 3.865 |
| 12-31-2004 | 3.525 | 3.919 |
| 09-30-2004 | 3.452 | 3.912 |
| 06-30-2004 | 3.436 | 3.877 |
| 03-31-2004 | 3.343 | 3.885 |
| 12-31-2003 | 3.71 | 3.893 |
| 09-30-2003 | 3.664 | 3.9 |
| 06-30-2003 | 3.712 | 3.885 |
| 03-31-2003 | 3.801 | 3.897 |
| 12-31-2002 | 4.148 | 4.074 |